Built motion from commit 6a09e18b.|2.6.11

[motion2.git] / legacy-libs / grpc / deps / grpc / src / core / lib / surface / completion_queue.h

diff --git a/legacy-libs/grpc/deps/grpc/src/core/lib/surface/completion_queue.h b/legacy-libs/grpc/deps/grpc/src/core/lib/surface/completion_queue.h
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+/*
+ *
+ * Copyright 2015-2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_SURFACE_COMPLETION_QUEUE_H
+#define GRPC_CORE_LIB_SURFACE_COMPLETION_QUEUE_H
+
+/* Internal API for completion queues */
+
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+#include "src/core/lib/debug/trace.h"
+#include "src/core/lib/gprpp/abstract.h"
+#include "src/core/lib/iomgr/pollset.h"
+
+/* These trace flags default to 1. The corresponding lines are only traced
+   if grpc_api_trace is also truthy */
+extern grpc_core::TraceFlag grpc_cq_pluck_trace;
+extern grpc_core::TraceFlag grpc_trace_operation_failures;
+extern grpc_core::DebugOnlyTraceFlag grpc_trace_pending_tags;
+extern grpc_core::DebugOnlyTraceFlag grpc_trace_cq_refcount;
+
+typedef struct grpc_cq_completion {
+  gpr_mpscq_node node;
+
+  /** user supplied tag */
+  void* tag;
+  /** done callback - called when this queue element is no longer
+      needed by the completion queue */
+  void (*done)(void* done_arg, struct grpc_cq_completion* c);
+  void* done_arg;
+  /** next pointer; low bit is used to indicate success or not */
+  uintptr_t next;
+} grpc_cq_completion;
+
+#ifndef NDEBUG
+void grpc_cq_internal_ref(grpc_completion_queue* cc, const char* reason,
+                          const char* file, int line);
+void grpc_cq_internal_unref(grpc_completion_queue* cc, const char* reason,
+                            const char* file, int line);
+#define GRPC_CQ_INTERNAL_REF(cc, reason) \
+  grpc_cq_internal_ref(cc, reason, __FILE__, __LINE__)
+#define GRPC_CQ_INTERNAL_UNREF(cc, reason) \
+  grpc_cq_internal_unref(cc, reason, __FILE__, __LINE__)
+#else
+void grpc_cq_internal_ref(grpc_completion_queue* cc);
+void grpc_cq_internal_unref(grpc_completion_queue* cc);
+#define GRPC_CQ_INTERNAL_REF(cc, reason) grpc_cq_internal_ref(cc)
+#define GRPC_CQ_INTERNAL_UNREF(cc, reason) grpc_cq_internal_unref(cc)
+#endif
+
+/* Initializes global variables used by completion queues */
+void grpc_cq_global_init();
+
+/* Flag that an operation is beginning: the completion channel will not finish
+   shutdown until a corrensponding grpc_cq_end_* call is made.
+   \a tag is currently used only in debug builds. Return true on success, and
+   false if completion_queue has been shutdown. */
+bool grpc_cq_begin_op(grpc_completion_queue* cc, void* tag);
+
+/* Queue a GRPC_OP_COMPLETED operation; tag must correspond to the tag passed to
+   grpc_cq_begin_op */
+void grpc_cq_end_op(grpc_completion_queue* cc, void* tag, grpc_error* error,
+                    void (*done)(void* done_arg, grpc_cq_completion* storage),
+                    void* done_arg, grpc_cq_completion* storage,
+                    bool internal = false);
+
+grpc_pollset* grpc_cq_pollset(grpc_completion_queue* cc);
+
+bool grpc_cq_can_listen(grpc_completion_queue* cc);
+
+grpc_cq_completion_type grpc_get_cq_completion_type(grpc_completion_queue* cc);
+
+int grpc_get_cq_poll_num(grpc_completion_queue* cc);
+
+grpc_completion_queue* grpc_completion_queue_create_internal(
+    grpc_cq_completion_type completion_type, grpc_cq_polling_type polling_type,
+    grpc_experimental_completion_queue_functor* shutdown_callback);
+
+#endif /* GRPC_CORE_LIB_SURFACE_COMPLETION_QUEUE_H */